GB939724A - Improvements in or relating to radio frequency dielectric heating apparatus - Google Patents
Improvements in or relating to radio frequency dielectric heating apparatusInfo
- Publication number
- GB939724A GB939724A GB3915859A GB3915859A GB939724A GB 939724 A GB939724 A GB 939724A GB 3915859 A GB3915859 A GB 3915859A GB 3915859 A GB3915859 A GB 3915859A GB 939724 A GB939724 A GB 939724A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radio frequency
- motor
- heating apparatus
- relay
- windings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/46—Dielectric heating
- H05B6/48—Circuits
- H05B6/50—Circuits for monitoring or control
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
939,724. Automatic current control systems for radio frequency heating apparatus. RADYNE Ltd. Dec. 1, 1960 [Nov. 18, 1959], No. 39158/59. Class 38 (4). Radio frequency heating apparatus comprises a radio frequency generator of the electronic valve oscillator type the H.T. current supply to which is supplied by way of a resistor 2, the voltage across this resistor energizing a winding 6 of a centre-balance relay A/1 a further winding 7 of which is energized by a standard voltage obtained from a potentiometer 5. When the H.T. current varies outside a predetermined range the windings 6, 7 of the relay A/1 are unbalanced causing the centre contact 9 to move to engage either contact 8 or 10 whereupon a relay system operates to cause one or other of the windings of a motor 11 to be energized so that the motor drives the upper electrode of the heater either towards or away from the burner electrode so that the output of the radio frequency generator is maintained within the predetermined range. The motor 11 is provided with an electromagnetic brake 12. The electrodes are provided with upper and lower limit switches 51, 52 and the control circuit may be described by means of switches S3, S4 and the motor 11 may be controlled manually by means of push buttons 15, 16 and 17, 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3915859A GB939724A (en) | 1959-11-18 | 1959-11-18 | Improvements in or relating to radio frequency dielectric heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3915859A GB939724A (en) | 1959-11-18 | 1959-11-18 | Improvements in or relating to radio frequency dielectric heating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB939724A true GB939724A (en) | 1963-10-16 |
Family
ID=10407986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3915859A Expired GB939724A (en) | 1959-11-18 | 1959-11-18 | Improvements in or relating to radio frequency dielectric heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB939724A (en) |
-
1959
- 1959-11-18 GB GB3915859A patent/GB939724A/en not_active Expired
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